12 results
Important Fungal Stains
Mycology Lab:
 • Calcofluor white - Fluorochrome that binds glucans and chitin in fungal
Important Fungal ... and chitin in fungal ... visualization of fungal ... • India ink - "Negative ... #microbiology #microscopy
Causes of blood culture negative infective endocarditis

Bartonella spp, Brucella spp, Coxiella burnetii, Chlamydia spp, Tropheryma whipplei,
Causes of blood ... culture negative ... infective endocarditis ... Tropheryma whipplei, Fungi ... InfectiousDiseases #Microbiology
My Patient with Infective Endocarditis (IE) Has Negative Blood Cultures
 - Did they receive antibiotics prior
with Infective Endocarditis ... (IE) Has Negative ... Blood Cultures ... Fungal (Histoplasma ... #Infective #Endocarditis
Blood Culture-Negative Infective Endocarditis (BCNIE)
Definition: No etiology found after 3 separate blood cultures remain negative for
Blood Culture-Negative ... Infective Endocarditis ... after 3 separate blood ... cultures remain negative ... #Infective #Endocarditis
Acinetobacter baumanii on culture and microscopy
 - MacConkey agar - Lactose Negative
 - gram negative (often
on culture and microscopy ... agar - Lactose Negative ... - gram negative ... violet esp. from blood ... #microbiology #
Septic Arthritis: Pathogenesis and clinical findings
Notes:
- Septic Arthritis is typically monoarticular & the knee is involved
cases - decr blood ... a +ve culture Microbiology ... be caused by, fungi ... SepticArthritis #pathophysiology
Endocarditis Summary

Who?
Infectious:
• Pre-existing valvular disease
• Prosthetic valve
• Congenital heart disease
• IV substance use
• IV catheter
• Recent
Endocarditis Summary ... Hypercoagulable (APLAS) Microbiology ... : Blood cultures ... • Coagulase-negative ... • Blood cultures
(1,3)-β-d-glucan
Abundant cell wall polysaccharide, found in most fungi, except cryptococci, zygomycetes (mucor, rhizophus) and blastomyces.
Sensitivity 64%-93%;
found in most fungi ... 87%-100% False Negatives ... • Hemolyzed blood ... • Certain fungus ... diagnosis #laboratory #microbiology
Alternaria on Culture Plate and Microscopy
Adult w/ aplastic anemia, getting regular blood product infusions. Had Group
Culture Plate and Microscopy ... getting regular blood ... Also had blood fungal ... environmental fungi ... #clinical #microbiology
Capnocytophaga spp on Culture and Blood Smear
Associated w/ dog/human oral flora, can cause bacteremia in immunocompromised
on Culture and Blood ... immunocompromised pts From blood ... anaerobe; narrow Gram negative ... Smear #clinical #microscopy ... #microbiology